Classic maintenance cases, strength witness

This article analyzes the whole process of repairing a critical 10kV, 1800kW high-voltage motor for a large mining company. In the face of the motor's stubborn faults of excessive vibration and repeated bearing burnout, the Sigma team not only eradicated the problem through precise diagnosis and systematic maintenance programs, but also established a predictive maintenance system for the client, avoiding major production stoppage losses. This case demonstrates Sigma's comprehensive technical strength and service value in the field of large motor maintenance.

Project Name: A chemical plant circulating water pump station Y2-4502-4 6KV 710kW high-voltage motor winding burn repair project A chemical plant main circulating water pump drive motor (Model: Y2-4502-4, 710kW, 6kV) in operation due to the transient impact of the grid, resulting in the stator winding turn-to-turn insulation breakdown ...

I. Customer Background and Failure Phenomenon Customer: A large mining group crushing workshop Equipment: 10kV, 1250kW synchronous motor, drive the core crusher Failure Phenomenon: In the face of sudden failure, the production line is facing the risk of a complete shutdown, every hour of shutdown means a huge economic loss ...

First, the fault background: sudden shutdown, production emergency Equipment Information: Preliminary site conditions: Inspection found that the motor stator winding from the slot about 10 cm from the existence of a serious burn fault, forming a diameter of about 1.8 cm, as deep as 2 cm of the broken point. Second, the extraction of cocoon: in-depth diagnosis and root cause analysis ...

First, the fault background: stubborn vibration, affecting production Equipment information: Second, in-depth diagnosis: to explore the root cause of vibration In the face of this recurring stubborn fault, the Sigma motor maintenance team took over, and did not immediately dismantle, but first carried out a systematic data collection and analysis of the cause: Third, the professional maintenance method ...

A repair case of a 1000kW large DC motor that was shut down due to a serious ring fire in the commutator. Through precise diagnosis and systematic repair, Sigma's maintenance team not only solved the commutator burnout problem, but also restored the stable operation of the equipment for the customer through a comprehensive preventive maintenance program, avoiding major production losses. This case demonstrates the professional strength of Sigma Motor in the field of large DC motor repair.

I. Fault Background: Sudden shutdown, production emergency Equipment Information: II. In-depth Diagnosis: Exploring the Root Cause of Insulation Breakdown After receiving the repair report, the maintenance team of Sigma Motor arrived at the site quickly and carried out systematic diagnosis: III. Professional Maintenance Programs and Execution Process According to the diagnostic results, we formulated and...

This article records in detail the whole process of repairing the open-circuit rotor winding of JR137-4 type wire-wound motor for a large mining company by the professional technical team of Sigma Motor. Through accurate fault diagnosis and professional winding process, we not only solved the rotor winding open-circuit problem, but also established a perfect equipment health management system for the customer through a comprehensive preventive maintenance program. This case demonstrates the technical strength and service quality of Sigma Motor in the field of JR series wire-wound motor repair.

Faced with a serious bearing chamber wear failure of a German imported high-voltage motor in the core production line of a multinational enterprise, the technical team of Sigma Motor successfully realized on-site disassembly-free repair by virtue of its superb craftsmanship and rich experience in imported equipment repair, which saved a lot of repair costs and time for the customer. This case fully demonstrates the technical strength and service level of Sigma Motor in the field of imported high-voltage motor repair.

Sigma's professional and technical team successfully repaired a serious failure of the bearing system of a 1600kW high-voltage motor in the core production line of a large-scale mining company through precision diagnosis and innovative maintenance solutions. Through on-site precision machining technology and professional maintenance program, the team not only quickly restored the equipment operation, but also established a perfect predictive maintenance system for the customer, which effectively avoided the loss of major production stoppages.

Background A key equipment of a large steel enterprise's hot rolling line, the 1800kW high-voltage motor, failed suddenly, resulting in the shutdown of the entire production line. This equipment has been in continuous operation for 8 years and is responsible for the core transmission of the production line. Failure Phenomenon Diagnostic Process Sigma's technical team responded immediately after receiving the repair report, and within 2 hours...

This article documents the successful repair of a 6kV high-voltage motor stator winding grounding fault for a large chemical company. Through precise diagnosis and professional repair process, our team not only solved the insulation breakdown problem of the winding, but also established a perfect equipment health management system for the customer through systematic preventive maintenance suggestions. This case demonstrates Sigma's technical strength and service quality in the field of 6kV high-voltage motor repair.